Filter.



E. NORTHR-UP.

. FILTER.

APPLICAUON FILED APR. 16. 1918.

1,293,173 Patented Feb. 4,1919.

IN VEIV TOR A TTORNEYS WITNESSES V openings,

UNITED snares Parana canton.

EARLY nonrmnur, 01* SAN ANTONIO, 'rnxns.

FILTER.

To all whom it may concern Be it known thatI, EARLY NORTHRUP, a citizen ofthe United States, and a resident of San Antonio, is the countyof Bexar and State of Texas, have invented certain new and useful Improvements in Filters, of which the following is a specification.

My invention is an irnprovemen-t in filters, and has for its object to provide a filter especially adapted for removing impurities from gasolene and oil, to fit the gasolene or oil for reuse.

In the drawings;

Figure'l is a vertical section of the 1mproved filter Fig. 2 is a section on the line 22 of Fig. 1, looking in the direction of the arrows adjacent to the line;

Fig. 3 is an enlarged sectional detail through one of the filter units;

Fig. 4 is an enlarged detail section of the joint between the sections.

The present embodiment of the invention comprises a casing consisting of a lower section 1 and an upper section 2, the said sec-- tions in the present instance being square in cross section and of suitable material, and the lower section has an inwardly turned bead 3 at its upper end for a purpose to be described. y

The upper section 2 has a reduced portion 4 at its bottom which fits within the top of the lower section, within the bead 3, and the shoulder 5 formed between the reduced portion and the body of the said section is adapted to rest upon the upper end of the lower section and upon the bead 3, a'gasket 6 being arranged between'the shoulder and the bead. The bottom of the reduced portion 4 is provided with a series of circular four in the present instance, and within each of these openings is a ring or nipple'7, the said ring or nipple extending above and below the bottom of the section and being externally threaded at each end as shown.

A filter unit is supported by each of these ring. Each of the said units comprises a cup shaped casing 8, having an annular enlarged portion at its upper end lndlcated at 9, which is internally threaded to engage the lower end of the ring or nipple 7 and at its lower end each casing has a reduced portion 10. Each of the reduced portions 10 is provided with an outlet pipe 11, and a screen 12 is arranged on the shoulder 13 Specification of Letters Patent.

Application filed April 16, 1918.

Patented Feb. 4, 1919. Serial No. 228,888.

formed between the reduced portion and the body of the casing, and this shoulder supports filtering material, as, for instance, porous carbon, indicated at 14. The space below the screen is vacant as is also the space above the porous carbon compound which extends to the beginning of the enlarged portion 9 of the casing.

A second screen 15 is arranged at the top of the ring 7, andthis screen is secured to a collar 16 which is threaded on to the upper end of the ring or nipple 7. The screen 12 is preferably of metal, having holes of suitable size therein, while the screen 15 may e of wire mesh, as shown.

An inner or lining section 17 is arranged within the upper section 2 of the casing, the said lining section having a reduced portion 18 at its lower end which fits closely within the reduced portion of the upper section, while the body of the lining section is spaced apart from the wall of the section 2, as shown in Fig. 1. The bottom of the lining section 17 has openings for receiving the rings or nipples 7 and these openings are of a size to receive the said rings closely. The collars 16 are threaded down upon the bottom of the lining section, as shown more particularly in Fig. 3, and the section is thus held to the upper section 2. This lining section has at its upper end a bead or rib 19 extending outwardly, and this head or rib rests upon the. upper end of the casing section 2. r

The space above the screens 15 and around the collars 16 is filled with a filtering compound indicated at 20, as, for instance, porous carbon, and a cover plate 21 rests upon the shoulder formed between the body of the lining section 17 and the reduced portion 18, and this plate has a marginal upstanding flange 22. The plate also has a central opening, and at this opening is arranged a screen 23 which is supported by a collar 24 threaded into the opening. The cover plate has a handle 25 extending transversely of the opening above the same, by means of which it may be removed or replaced. A suitable cover 26 is provided for the upper section of the casing, the said cover having a handle 27, and the lower section is provided with a discharge pipe 28.

In use, the oil or gasolene to be filtered is poured into the lining section 17, the cover 26 being first removed. As it flows downward through the filtering material in the portion 18 of the lining section and through the filter units, it will be purified, eventually reaching the lower section 1 of the casing, from which it may be withdrawn by means of the discharge pipe 28..

It will be understood that while the filter casin is shown as s uare in cross section it will be obvious that it may be of any other cross section, and while the nipple or ring 7 is shown as externally threaded it may be threaded internally.

I claim:

1. A filter comprising a casing consisting of a lower or receiving section, an upper or filter section composed of inner and outer sections, the lower end of the outer section fitting within the upper end of the lower section and having a series of threaded rings in its bottom and extending through the bottom and through the bottom of the inner sect-ion, filter units, each unit comprising a screen section above the bottom of the inner section and threaded on to the upper end of one of the rings, a filter section threaded on to the lower end of the ring and having a transverse screen and filtering material held on the screen, said lower section having an outlet at its bottom, and the screen sections at the tops of the rings engaging the bottom of the inner section.

2. A filter comprising a casing consistingof a lower or receiving section, an upper or filter section composed of inner and outer casings, the lower end of the outer casing fitting within the upper end of the lower section and having a series of threaded rings in its bottom and extending through the bottom and through the bottom of the inner section, filter units, each unit comprising a screen section above the bottom of the inner casing and threaded on to the upper end of one of the rings, a filter'section threaded on to the lower end of the ring and having a transverse screen and filtering material held on the screen, filtering material held within the inner casing,v and a cover over the said material, said cover having a central open- Gopies of this patent may be obtained for five cents each, by addressing the ing provided with a screen, and the inner casing having an annular ledge or shoulder upon which the cover rests.

3. A filter comprising a casing consisting of a lower or receiving section, an upper or filter section composed of inner and outer casings, the lower end of the outer casing fitting within the upper end of the lower section and having a series of threaded rings in its bottom and extending through the bottom and through the bottom of. the inner section, filter units, each unit comprising a screen section above thebottom of the inner casing and a filter section threaded on to the lower end of one of the rings and having a transverse screen and filtering material held on the screen, filtering material held within the inner casing, and a. cover over the said material.

4:. A filter comprising a casing consisting of a lower or receiving section, an upper or filter section composed of inner and outer casings, the lower end of the outer casing fitting within the upper end of the lower section andhaving a series of threaded rings in its bottom and extending through the bottom and through the bottom of the inner section, filter units, each unit comprising a screen section above the bottom of the inner casing and threaded on to the upper end of one of the rings, a filter section threaded on to the lower end of the ring and having a transverse screen, and filtering material held on the screen, said lower section having an outlet at its bottom.

5. A. filter comprising a casing consisting of upper and lower sections, the upper section having a series of threaded rings extending through its bottom, a filter unit con.- nected with each ring, each unit comprising a screen section above the bottom of the upper section. and having threaded engagement with the ring, a filter section detachably connected with the lower end of the ring and carrying a transverse screen, and filtering material held on the screen;

' EARLY NORTHRUP.

Commissioner of Patents,

Washington, D. C. 

